• Transactions of the Korean Society of Mechanical Engineers
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• v.18 no.5
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• pp.1117-1125
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• 1994

A UBET program is developed for determining the optimum sizes of preform of a rib-web part in axisymmetric closed-die forging. The program consists of forward and backward tracing processes. In forward process, material flow, degree of die filling, and forging load are predicted. In backward tracing process, the optimum dimensions of initial billet and preform are determined from the final-shape data without flash. The above program is easy to handle input data with and is convenient to visualize the whole process of closed-die forging with. Experiments are carried out with pure plasticine billets at room temperature. The theoretical predictions of the forging load and the flow pattern are in good agreement with the experimental results.

• Electronics and Telecommunications Trends
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• v.15 no.6 s.66
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• pp.65-73
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• 2000

정보 특성 시각화는 방대한 인터넷 정보로부터 사용자가 원하는 정보에 대한 이해도를 높임으로써 정보 검색시 요구되는 시간과 노력을 감소시키며, 검색된 결과에 대한 통계치를 시각적으로 보여줌으로써 검색 과정중에 효과적으로 필요정보를 탐색할 수 있게 한다. 최근 정보 시각화에 관한 관심이 증가하면서 주로 선진국을 중심으로 여러 가지 시각화 기법에 대한 연구와 이를 적용한 검색 시스템들이 개발되고 있다. 따라서 본 고에서는 정보의 특성을 체계적이면서 시각적으로 표현하기 위해, 정보 시각화의 구성요소를 획일화하고 적합한 검색 기법을 제안하여 새로운 차원의 패러다임을 제시하고, 사용자가 보다 쉽게 정보를 항해하고 정보에 대한 이해도를 향상시키기 위한 검색 도구를 개발함으로써 검색 정보에 대한 사용자 이해도의 향상 및 효율적인 검색을 하기 위한 것이다.

• Journal of the Korean Society for Railway
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• v.7 no.4
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• pp.406-411
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• 2004

BOM(Bill of Materials) is a listing or description of raw materials, parts, and assemblies that define a product. In order to evaluate the performance of proposed BOM management system, which is very important to maintenance information system of urban transit. We develop component based BOM data and rule-set to design data structure that is mutually independent and integrated efficiently. It divides data whit management interface using component technology. The component based master BOM have advantage in database size and flexibility. Flexibility is measured as the number of updating records in accordance with added new product or engineering change. In database size, component based BOM is the best. we develop master BOM management system in web environment.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.516-519
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• 2003

웹 환경에 가상현실(Virtual Reality)이 도입됨에 따라 최근 3차원 컨텐츠로 표현되는 웹 3D가 사이트에 많이 활용되고 있다. 웹 3D는 사용자(User)가 마우스나 키보드의 입력장치를 이용하여 직접 구현해 봄으로써 실재 사용하는 듯함 현실감을 얻을 수 있는 효과가 있으나, 이러한 인터랙티비티 구현에 있어 웹 3D를 접할 기회가 적었던 기존의 사용자(User)들은 많은 오작동을 범할 우려를 가지고 있다. 그러므로 본 논문은 사용자의 웹 3D 구현에 있어 오작동을 줄 일 수 있는 가장 적절한 인터페이스 디자인을 모색하기 위해 사례 분석을 하고 실제 사용자 실험을 실시하여 효과적으로 웹 3D를 구현할 수 있는 검증된 인터페이스 디자인을 제시하고자 한다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.6 no.4
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• pp.53-66
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• 1996

World Wide Web is a total solution for multi-media data transmission on Internet. Because of its characteristics like ease of use, support for multi-media data and smart graphic user interface, WWW has extended to cover all kinds of applications. The Secure Information Center(SIC) is a data transmission system using conventional cryptography between client and server on WWW. It's main function is to support the encryption of sending data. For encryption of data IDEA(International Data Encryption Algorithm) is used and for authentication mechanism MD5 hash function is used. Since Secure Information Center is used by many users, conventional cryptosystem is efficient in managing their secure interactions. However, there are some restrictions on sharing of same key and data transmission between client and server, for example the risk of key exposure and the difficulty of key sharing mechanisms. To solve these problems, the Secure Information Center provides encryption mechanisms and key management policies.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.310-312
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• 2009

오늘날 기업은 전국,전세계적으로 storage location을 가지고 있으며, 전세계적으로 가장 많이 사용되는 물류관리시스템으로 SAP R/3을 들수있다. 기업은 비용절감을 위해 통합시스템 구축을 하려한다. 통합시스템 구축시 가장 우선되는 부분인 비용절감, 안정성, 보안성 등을 고려한다. 또한 RFID의 도입은 물류관리시스템에서 입고, 출고의 정확성 및 적재위치로의 관리가 용이하며 선입선출의 편리성을 도모할 수 있다. 따라서 본 논문에서는 RFID활용한 물류관리 middleware 설계방법과 RFC(Remote Function Call)을 활용한 웹과 interface방법 및 UML을활용한 framework 설계하고, 마지막으로 향후 연구과제를 제시하였다.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.785-790
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• 2009

Widgets are the instrument for representing user's character and embossing the value of blogs. The compound word of the Windows and Gadget the application, widgets are the functional program to displayed on the screen graphical user interface (GUI) tools as a kind of service that user want to see. On the operating system, the Web, and mobile area, widgets offer the delivery of information, convenience and efficiency. However widgets have been never gave satisfaction to user because it focused transmitting information and representing circumstance than fun. This study is for recognized fun elements that user feel interest and categorized fun elements each type of widgets. Fun elements of widget never been defined, we use fun elements on design and product area and emotional word that is representative of affectivity. And we make up an online questionnaire to blog users. The widget selected by popular degree among the domestic widgets and the Japanese widget. And the results of the questionnaire that 5-scales used based on user preferences to identify the elements that are fun.

• Journal of the Korea Convergence Society
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• v.8 no.8
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• pp.59-69
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• 2017

Humanities and social sciences researchers and database experts have teamed up to build a database of IPR materials prepared by the Institute of Pacific Relations (IPR). This paper presents the issues and solutions inherent in the database construction for ensuring the quality of IPR materials. For the accessibility of the database, we maintain the database on the Web so that researchers can access it via web browsers; for the convenience of the database construction, we provide an integrated interface that allows researchers to perform all tasks in it; for the completeness of IPR materials constructed, we support the responsible input and the responsible approval that identify responsibilities of each IPR material entered; and for the immediacy of the approval, we support an interactive approval process facilitating the input of researchers. We also use database design, query processing, transaction management, and search and sorting techniques to ensure the correctness of IPR materials entered. In particular, through concurrency control using existence dependency relationships between records, we ensure the correctness between the operating system files and their paths. Our future studies include content search, database download and upload, and copyright related work on IPR materials.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.8
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• pp.1366-1372
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• 2006

After the import liberalization of agricultural products, The Imported agricultural products rapidly increased market share of domestic agricultural products. But Imported agricultural products include various agricultural chemicals and food additives. In order to improve competitiveness in domestic markets of farmhouses and to secure food safety, the farmers needs to introduce Systematic support and various system. In this paper, established system that use Monitoring technology, to inform production information and management information about agricultural products to consumer by real time. Therefore unused analog camera such as CCTV(Closed-Circuit Television) for real time Monitoring. This system Used web camera that offer picture quality that is good than CCTV at place that consists network without distinction in the place. An advantage of real time Monitoring system designed multi-vision interface showing multi images on single screen and, for the purpose of the improvement in efficiency, the functions of saving images and of scheduling the time to save the images.

• Proceedings of the CALSEC Conference
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• 1999.07b
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• pp.587-596
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• 1999

In this paper, we introduce the design and development of a web-based workflow management system. The goal of the developed system is to manage business processes occurring in the CITIS (Contractor Integrated Technical Information Services) environment. The system is composed of three main modules: Process Designer, Workflow Engine, and Client modules. The Process Designer is a module that provides the environment for the build-time function, which generates the specifications of processes. The module presents the capability of defining nested process models, which is powerful in particular for designing complex processes. Since the other two modules are implemented using pure Java technology, the Workflow Engine can be implemented on any platform and the Client programs can be accessed via the WWW interface. This indicates that there is no need to install any client programs at the client-sides. Users who has a connection to the internet with web browsers, such as Internet Explorer and Netscape Navigator, and has a proper right of access can utilize the normal client, monitoring client, and system administration client programs. Communications between the workflow engine and the clients are implemented using the java servlet mechanism. The workflow system can serve as the underlying platform of process management tool in CALS and CITIS environments. An example scenario of using the system is presented.